Electrical Connection - Grundfos LC A2 Instrucciones De Instalación Y Funcionamiento

7. Electrical connection

Figure 3 shows the position of the terminal blocks for
the control relay (connection of level switch) and the
alarm relay.
Control relay
Fig. 3 Alarm relay
The socket function can be set at the terminal block.
See fig. 4.
• Cont.:
The socket is used as a feed-through socket.
• NO (normally open contact):
The socket will be switched on in case of fault.
Control relay
Fig. 5 Connection of several LC A2 units
It is also possible to lock the LC A2 to disable
automatic restarting. In case of alarm, the LC A2
must be pulled out of the socket. See example in fig.
6.
Control relay
Fig. 6 Locked LC A2
Alarm relay
Alarm relay Control relay
Alarm relay
• NC (normally closed contact):
The socket will be switched off in case of fault.
This is the default setting for stop of a washing
machine.
Fig. 4 Terminal block, socket function
By connecting several LC A2 units, a corresponding
number of appliances can be switched on/off by
means of one control relay (level switch). See
example in fig. 5.
Alarm relay
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